The M. I. T. -based authors of the journal article note that the trend could exacerbate some problems, such as the growing congestion in earth orbit as well as the danger of spreading space debris.
杂志文章作者在麻省理工任教，他指出这种趋势将可能加剧一些问题，比如地球轨道上日益拥挤的卫星和产生宇宙垃圾的威胁。
The real danger lies in the fact that you don"t understand yourself."
真正的危险在于你不了解自己。
If we don 't know our planet, our future may be in danger.
要是我们不知道我们的星球，我们的未来就会有危险。
If we don 't know our planet, our future may be in danger.
要是我们不知道我们的星球，我们的未来就会有危险。
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